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1. Aligned Fe microfiber reinforced epoxy composites with tunable electromagnetic properties and improved microwave absorption

Author:
Qing, Yuchang; Nan, Hanyi; Jia, Hongyao; Min, Dandan; Zhou, Wancheng; Luo, Fa
Source:
Journal of materials science 2019 v.54 no.6 pp. 4671-4679
ISSN:
0022-2461
Subject:
iron,   etc   ; absorption; epoxides; permeability;     Show all 4 Subjects
Abstract:
... Aligned Fe microfiber/epoxy composites (FMF/EP) were prepared by shear force. The effects of the alignment on the morphology, electromagnetic properties and microwave absorption performances were studied. The results showed that the FMF inclines to be aligned uniformly after alignment treatment. The aligned FMF/EP composite exhibits higher complex permeability and lower complex permittivity in the ...
DOI:
10.1007/s10853-018-03192-y

2. Unraveling the enzyme-like activity of heterogeneous single atom catalyst

Author:
ZhaoThese authors contributed equally., Chao; Xiong, Can; Liu, Xiaokang; Qiao, Man; Li, Zhijun; Yuan, Tongwei; Wang, Jing; Qu, Yunteng; Wang, XiaoQian; Zhou, Fangyao; Xu, Qian; Wang, Shiqi; Chen, Min; Wang, Wenyu; Li, Yafei; Yao, Tao; Wu, Yuen; Li, Yadong
Source:
Chemical communications 2019 v.55 no.16 pp. 2285-2288
ISSN:
1364-548X
Subject:
iron; iron oxides,   etc   ; catalase; catalysts; chemical reactions; enzyme activity; peroxidase;     Show all 7 Subjects
Abstract:
... Herein, we report a heterogeneous single iron atom catalyst exhibiting excellent peroxidase, oxidase and catalase enzyme-like activities (defined as single atom enzymes, SAEs), exceeding those of Fe₃O₄ nanozymes by a factor of 40. Our findings open up a new family of artificial materials that mimic natural enzymes. ...
DOI:
10.1039/c9cc00199a

3. Numerical investigation of flame behavior and quenching distance in randomly distributed poly-dispersed iron dust cloud combustion within a narrow channel

Author:
Vahabzadeh Bozorg, Mehdi; Bidabadi, Mehdi; Bordbar, Vahid
Source:
Journal of hazardous materials 2019 v.367 pp. 482-491
ISSN:
0304-3894
Subject:
iron,   etc   ; burning; combustion; dust; heat; powders; temperature;     Show all 7 Subjects
Abstract:
... In this research, the combustion of iron dust cloud through a narrow channel is simulated. Particles are randomly distributed within a rectangular control volume. Both conductive heat transferred from ignited to unignited particles and radiative heat scattered from burning particles are considered in the simulation. Radiative heat loss to the ambient gas as well as conductive heat loss to the chan ...
DOI:
10.1016/j.jhazmat.2019.01.002

4. Iron gall ink revisited: hierarchical formation of Fe(iii)–tannic acid coacervate particles in microdroplets for protein condensation

Author:
Kim, Beom Jin; Lee, Jungkyu K.; Choi, Insung S.
Source:
Chemical communications 2019 v.55 no.15 pp. 2142-2145
ISSN:
1364-548X
Subject:
iron,   etc   ; chemical reactions; dextran; proteins; separation; tannins;     Show all 6 Subjects
Abstract:
... Inspiration from the iron gall ink leads to the efficient formation of Fe(iii)–tannic acid coacervate particles inside the phase-separated microdroplets that are derived from the aqueous PEG/dextran liquid–liquid phase separation system. This hierarchical self-assembly, in aid of the protein affinity of tannic acid, makes it possible to compartmentalize and condense proteins into a localized, comp ...
DOI:
10.1039/c8cc09507h

5. Surface breakage of fired iron ore pellets by impact

Author:
Cavalcanti, Pedro P.; de Carvalho, Rodrigo M.; das Chagas, Anderson S.; da Silveira, Marcus W.; Tavares, Luís Marcelo
Source:
Powder technology 2019 v.342 pp. 735-743
ISSN:
0032-5910
Subject:
iron,   etc   ; energy; models; pellets; powders; silos; steel;     Show all 7 Subjects
Abstract:
... Surface breakage or attrition occurs when iron ore pellets are subjected to handling stages in which the stressing level is insufficient to cause their massive fracture. This breakage mechanism has been investigated for five types of industrial iron ore pellets from impacts against a steel target, leading to a model that accounts for the effect of pellet size, impact energy and angle. The model is ...
DOI:
10.1016/j.powtec.2018.10.044

6. Dealkylative intercepted rearrangement reactions of sulfur ylides

Author:
Empel, Claire; Hock, Katharina J.; Koenigs, Rene M.
Source:
Chemical communications 2019 v.55 no.3 pp. 338-341
ISSN:
1364-548X
Subject:
iron,   etc   ; catalysts; chemical reactions; moieties; sulfur;     Show all 5 Subjects
Abstract:
... Sulfur ylides are well-known to undergo sigmatropic rearrangement reaction. Herein, we describe a novel reactivity of sulfur ylides, which provides access to the product of a formal functional group metathesis upon dealkylative interception of the rearrangement process. Using a simple iron catalyst and in situ generated diazoalkanes this method provides access to α-mercaptoacetonitrile derivatives ...
DOI:
10.1039/c8cc08821g

7. Fast-FineCut: Grain boundary detection in microscopic images considering 3D information

Author:
Ma, Boyuan; Ban, Xiaojuan; Su, Ya; Liu, Chuni; Wang, Hao; Xue, Weihua; Zhi, Yonghong; Wu, Di
Source:
Micron 2019 v.116 pp. 5-14
ISSN:
0968-4328
Subject:
iron,   etc   ; algorithms; image analysis; microstructure; physicochemical properties;     Show all 5 Subjects
Abstract:
... The inner structure of a material is called its microstructure. It stores the genesis of a material and determines all the physical and chemical properties. However, the microstructure is highly complex and numerous image defects such as vague or missing boundaries formed during sample preparation, which makes it difficult to extract the grain boundaries precisely. In this work, we address the tas ...
DOI:
10.1016/j.micron.2018.09.002

8. Achieving superior electromagnetic wave absorbers through the novel metal-organic frameworks derived magnetic porous carbon nanorods

Author:
Wu, Nannan; Xu, Dongmei; Wang, Zhou; Wang, Fenglong; Liu, Jiurong; Liu, Wei; Shao, Qian; Liu, Hu; Gao, Qiang; Guo, Zhanhu
Source:
Carbon 2019 v.145 pp. 433-444
ISSN:
0008-6223
Subject:
iron; iron oxides,   etc   ; carbon; coordination polymers; electromagnetic radiation; electronics; magnetism; nanoparticles; nanorods; pyrolysis; temperature;     Show all 11 Subjects
Abstract:
... High absorption capacity and broad absorption bandwidth electromagnetic wave (EMW) absorption materials (namely, EMW absorbers) are highly desirable due to the interference with electronics and harms on human beings’ health. In search for rational design on nanostructured absorbers, we have synthesized and demonstrated the rod-shape composites with Fe-containing magnetic nanoparticles (Fe3O4, Fe3C ...
DOI:
10.1016/j.carbon.2019.01.028

9. Adsorption and mechanistic study for phosphate removal by magnetic Fe3O4-doped spent FCC catalysts adsorbent

Author:
Yuan, Ling; Qiu, Zhaofu; Yuan, Lin; Tariq, Muhammad; Lu, Yunqing; Yang, Ji; Li, Zhen; Lyu, Shuguang
Source:
Chemosphere 2019 v.219 pp. 183-190
ISSN:
0045-6535
Subject:
iron; iron oxides,   etc   ; active sites; adsorbents; adsorption; anions; carbonates; catalysts; catalytic cracking; ligands; magnetism; phosphates; wastes;     Show all 13 Subjects
Abstract:
... The waste materials utilization has attained increasing attention due to the generation of a large number of spent materials. In the current study, a practical magnetic adsorbent (Fe3O4-doped spent Fluid Catalytic Cracking catalysts, abbreviated as FCCx@(Fe)y-O) was prepared, liable to be separated. The batch experiments were employed to investigate the phosphate removal behavior. The findings of ...
DOI:
10.1016/j.chemosphere.2018.11.132

10. Ligand-mediated contaminant degradation by bare and carboxymethyl cellulose-coated bimetallic palladium-zero valent iron nanoparticles in high salinity environments

Author:
Ma, Xiaoming; He, Di; Jones, Adele M.; Waite, T. David; An, Taicheng
Source:
Journal of environmental sciences (China) 2019 v.77 pp. 303-311
ISSN:
1001-0742
Subject:
iron; iron oxides,   etc   ; EDTA (chelating agent); carboxymethylcellulose; magnetism; models; nanoparticles; oxidation; saline water; salinity;     Show all 10 Subjects
Abstract:
... The application of nanoscale zero-valent iron (nZVI) for the degradation of contaminants has been extensively investigated, however, few studies have focused on degradation in high salinity environments. In this study, the ability of bare and carboxymethyl cellulose (CMC)-coated bimetallic Pd-nZVI particles to degrade 33′44′-tetrachlorobiphenyl in high saline water (SW) is examined with particular ...
DOI:
10.1016/j.jes.2018.09.002

11. Long-term sorption and desorption of uranium in saprolite subsoil with nanoporous goethite

Author:
Jung, Hun Bok; Xu, Huifang; Roden, Eric E.
Source:
Applied geochemistry 2019 v.102 pp. 129-138
ISSN:
0883-2927
Subject:
iron; iron oxides,   etc   ; calcium; desorption; geochemistry; goethite; nanopores; pH; saprolite; sodium bicarbonate; soil; sorption; uranium; Tennessee;     Show all 14 Subjects
Abstract:
... Long-term (2–3 months) batch U(VI) sorption-desorption experiments were conducted to understand the long-term sorption-desorption behavior of U(VI) in saprolite subsoils from Oak Ridge Field Research Center (ORFRC), Tennessee, which contained naturally occurring nanoporous goethite. Three subsoil samples containing a range of dithionite-citrate-bicarbonate (DCB) extractable Fe oxide content (7138, ...
DOI:
10.1016/j.apgeochem.2019.01.017

12. Fluidization state monitoring using electric current during fluidized bed reduction of iron ore

Author:
Guo, Lei; Wang, Zhe; Zhong, Shengping; Bao, Qipeng; Guo, Zhancheng
Source:
Powder technology 2019 v.343 pp. 683-692
ISSN:
0032-5910
Subject:
iron; iron oxides,   etc   ; electric current; ferrous oxide; fluidized beds; monitoring; powders; prediction; temperature;     Show all 9 Subjects
Abstract:
... It was found that the real-time fluidization state can be monitored with the help of electric current acquisition during a fluidized bed reduction of iron ore fines, which might be used to the prediction of de-fluidization and localized fluidization state monitoring in a plant-scale fluidized bed. All Fe, FeO, and Fe3O4 phases have been proven to be conductive at high temperatures. In addition, th ...
DOI:
10.1016/j.powtec.2018.11.058

13. Water Vapor Binding on Organic Matter-Coated Minerals

Author:
Cheng, W.; Hanna, K.; Boily, J. -F.
Source:
Environmental science & technology 2019 v.53 no.3 pp. 1252-1257
ISSN:
1520-5851
Subject:
iron; iron oxyhydroxides,   etc   ; adsorption; geochemistry; humic acids; hydrophilicity; minerals; prediction; soil; spectroscopy; water vapor;     Show all 11 Subjects
Abstract:
... Atmospheric water vapor binding to soils is a key process driving water availability in unsaturated terrestrial environments. Using a representative hydrophilic iron oxyhydroxide, this study highlights key mechanisms through which water vapor (i) adsorbs and (ii) condenses at mineral surfaces coated with Leonardite humic acid (LHA). Microgravimetry and vibrational spectroscopy showed that liquid-l ...
DOI:
10.1021/acs.est.8b05134

14. The W/O/W emulsion containing FeSO4 in the different phases alters the hedonic thresholds in milk-based dessert

Author:
Simiqueli, Andréa Alves; Lima Filho, Tarcísio; Minim, Luis Antonio; de Oliveira, Eduardo Basílio; Torres, Isabelle Vieira; Vidigal, Márcia Cristina Teixeira Ribeiro; Minim, Valéria Paula Rodrigues
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.99 pp. 98-104
ISSN:
0023-6438
Subject:
iron; iron deficiency anemia,   etc   ; desserts; emulsions; food fortification; milk; nutrient deficiencies; sensation; sensory properties;     Show all 9 Subjects
Abstract:
... Food fortification with FeSO4 is an effective practice in preventing iron deficiency anemia. However, the addition of this compound to foods can lead to unpleasant sensory changes. Therefore, the use of carrier vehicles such as the double emulsion, may be an effective alternative to “mask” or minimize sensory perception. The W/O/W emulsion system containing FeSO4 in the internal or external aqueou ...
DOI:
10.1016/j.lwt.2018.09.020

15. Wet-chemical extractions to characterise pedogenic Al and Fe species – a critical review

Author:
Rennert, Thilo
Source:
Soil research 2019 v.57 no.1 pp. 1-16
ISSN:
1838-675X
Subject:
iron; iron oxides,   etc   ; aluminum; dithionite; nontarget organisms; oxalates; soil; soil classification; soil composition; species identification; spectroscopy;     Show all 11 Subjects
Abstract:
... Wet-chemical extraction of soil is a standard procedure to characterise pedogenic aluminium (Al) and iron (Fe) species, especially oxides, allophanic minerals and metal–organic associations. This article critically reviews the suitability of commonly used extractants (e.g. dithionite, oxalate and pyrophosphate) and the potentials and restrictions in their use for species identification and in soil ...
DOI:
10.1071/SR18299

16. Modified activated carbon with interconnected fibrils of iron-oxyhydroxides using Mn2+ as morphology regulator, for a superior arsenic removal from water

Author:
Nieto-Delgado, Cesar; Gutiérrez-Martínez, Joel; Rangel-Méndez, J. Rene
Source:
Journal of environmental sciences (China) 2019 v.76 pp. 403-414
ISSN:
1001-0742
Subject:
iron; iron oxides; iron oxyhydroxides,   etc   ; activated carbon; active sites; adsorbents; adsorption; arsenic; hot water treatment; hydrolysis; ions; manganese; microwave treatment; nanoparticles; protocols; surface area;     Show all 16 Subjects
Abstract:
... The arsenic removal efficiency of iron-modified activated carbons depends greatly on the number of available iron oxide surface sites, which are given by the surface area of the anchored particles. In this sense, aiming the generation of an adsorbent with superior arsenic adsorption capacity, we developed a protocol to anchor interconnected fibrils of iron oxyhydroxides, using Mn2+ as a morphology ...
DOI:
10.1016/j.jes.2018.06.002

17. Factors affecting the determination of iron species in the presence of ferric iron

Author:
Zhu, Jian; Yang, Xi; Fan, Feifei; Li, Yitong
Source:
Applied water science 2018 v.8 no.8 pp. 228
ISSN:
2190-5487
Subject:
iron,   etc   ; fluorides; spectrophotometers; temperature;     Show all 4 Subjects
Abstract:
... The high concentration Fe³⁺ in sample had interference on the determination of iron species by spectrophotometric method in which 1,10-phenanthroline was used to as a chromogenic agent. The F⁻ could mask absolutely the effect of Fe³⁺ when F⁻/Fe³⁺ molar concentration ratio was 13.3. The temperature or light did not affect the masking action of F⁻. Low temperature and dark conditions favored the sta ...
DOI:
10.1007/s13201-018-0876-6

18. Porous MXene Frameworks Support Pyrite Nanodots toward High-Rate Pseudocapacitive Li/Na-Ion Storage

Author:
Du, Cheng-Feng; Liang, Qinghua; Zheng, Yun; Luo, Yubo; Mao, Hui; Yan, Qingyu
Source:
ACS applied materials & interfaces 2018 v.10 no.40 pp. 33779-33784
ISSN:
1944-8252
Subject:
iron,   etc   ; nanohybrids; pyrite;     Show all 3 Subjects
Abstract:
... Presented are the novel Ti₃C₂Tₓ MXene-based nanohybrid that decorated by pyrite nanodots on its surface (denoted as FeS₂@MXene). The nanohybrid was obtained by the one-step sulfurization of self-assembled iron hydroxide@MXene precursor. When used for Li/Na-ion storage, the FeS₂@MXene nanohybrid present excellent rate capabilities. Particularly, for Li-ion storage, an elevated reversible specific c ...
DOI:
10.1021/acsami.8b13750

19. Fe effect on the process of intrinsic point defects in α-Al2O3

Author:
Xiang, Xin; Zhang, Guikai; Tang, Tao
Source:
Journal of materials science 2018 v.53 no.16 pp. 11194-11203
ISSN:
0022-2461
Subject:
iron,   etc   ; aluminum oxide; energy;     Show all 3 Subjects
Abstract:
... Fe is a common existing impurity in α-Al₂O₃, and thus the effect of Fe on the process of intrinsic point defects in α-Al₂O₃ has been investigated based on first-principles calculations. It is found that the formation, charge state, relative stability and equilibrium configuration of isolated intrinsic point defects in α-Al₂O₃ will be remarkably influenced by Fe, resulting in the variation of defec ...
DOI:
10.1007/s10853-018-2395-0

20. A combination–decomposition method to synthesize two-dimensional metal sulfide–amine hybrid nanosheets: a highly efficient Fe-based water oxidation electrocatalyst

Author:
Zhang, Guofeng; Qin, Qing; Luo, Wenhao; Liu, Yanxia; Jin, Cen; Hao, Jing; Zhang, Jing; Zheng, Wenjun
Source:
Chemical communications 2018 v.54 no.36 pp. 4617-4620
ISSN:
1364-548X
Subject:
iron,   etc   ; cations; nanosheets; oxidation;     Show all 4 Subjects
Abstract:
... Uniform FeS₁.₄(Dmim)₀.₅ (Dmim = 1-n-butyl-2,3-dimethylimidazolium cation) hybrid nanosheets were developed through an innovative combination–decomposition approach. More importantly, the obtained hybrid nanosheets demonstrate unprecedentedly high electrocatalytic activity, which represents the discovery of a novel, efficient Fe-based electrocatalyst and expands the scope of new types of electrolyt ...
DOI:
10.1039/c8cc00895g